A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5985-00-975-3152
NSN 5930-01-388-0865
NSN 6645-00-969-8810
NSN 6240-00-079-0112
NSN 5920-00-032-3316
NSN 5950-00-278-4186
NSN 6135-01-226-4071
NSN 5920-00-156-4482
NSN 6150-01-469-7458
NSN 5935-00-325-1671
NSN 5905-00-036-6655
NSN 6135-01-534-0310